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Finding the Fourth Proportional to 4,381.79, 6,564.17 and 3,890.93

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Solution

The fourth proportional to 4,381.79, 6,564.17 and 3,890.93 is: 5,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,381.79 : 6,564.17 = 3,890.93 : x
  2. Step 2: Convert to fraction form
    4,381.79/6,564.17 = 3,890.93/x
  3. Step 3: Cross multiply
    4,381.79x = 6,564.17 × 3,890.93
  4. Step 4: Simplify right side
    4,381.79x = 25,540,673.70
  5. Step 5: Solve for x
    x = 25,540,673.70/4,381.79
  6. Step 6: Final answer
    x = 5,828.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.